Jharne De and Ranjana Kumar Solutions for Chapter: Knowing Our Numbers, Exercise 11: Test Paper 1

The multiplicative inverse of $-7$ is _____.

The additive inverse of $+5$ is _____.

Evaluate: $|7\times (-5)÷5|$

Using the distributive property, multiply $(-306)$ by $103$.

Simplify: $-3[5\times \left(-2\right)+\left(7\times 8\right)÷\left(2\times 14\right)]$

An integer when divided by $(-7)$ gives $(-61)$. Find the integer.

Calculate by suitable arrangement : $\left\{\right(6+7)\times 3-8\}\times 3$

If an operation $*$ is defined such that $\mathrm{a}\mathrm{*}\mathrm{b}=\left(\mathrm{a}+\mathrm{b}\right)-(\mathrm{a}\times \mathrm{b})$, then find the value of $\left|\left(-3\right)*5\right|$.